Printable · GCSE Foundation · ages 14-16

Inverse operations and priority of operations worksheet — GCSE Foundation

Fifteen questions on "inverse operations and priority of operations" — DfE statement N3. Print it, or print three versions so neighbours cannot copy by letter; the key gives the letter for each version.

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Inverse operations and priority of operations worksheet — GCSE Foundation

Maths · GCSE Foundation · N3 · Inverse operations and priority of operations · 15 questions

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1.Grace works out 7 × 99 by writing 99 as 100 − 1. Use her method to work out 7 × 99.
(a)707
(b)700
(c)693
(d)699
2.A number is multiplied by 4, then 8 is added, giving the result 40. Work out the number.
(a)8
(b)128
(c)2
(d)12
3.Work out the value of √(16 + 9)
(a)5
(b)12
(c)7
(d)−5
4.Work out (−6) + (−4) × 3
(a)−30
(b)−18
(c)18
(d)6
5.A number is divided by 5, then 6 is subtracted, giving the result −1. Work out the number.
(a)25
(b)−5
(c)1
(d)−35
6.Work out 5 + 3 × (9 − 6)
(a)14
(b)24
(c)9
(d)26
7.Write down the reciprocal of 0.2
(a)−0.2
(b)0.8
(c)5
(d)0.5
8.Find the missing number: 17 × ▢ = 391
(a)23
(b)374
(c)17
(d)6647
9.Work out 3 + 4 × 2²
(a)28
(b)67
(c)196
(d)19
10.Four students work out 6 + 2 × 3. Which student has worked it out correctly?
(a)Chen: 6 × 2 = 12, then 12 + 3 = 15
(b)Dev: 2 × 3 = 5, then 6 + 5 = 11
(c)Ben: 2 × 3 = 6, then 6 + 6 = 12
(d)Amy: 6 + 2 = 8, then 8 × 3 = 24
11.Find the missing number: ▢ ÷ 15 = 24
(a)360
(b)39
(c)9
(d)1.6
12.Work out (−36) ÷ (−6) × 2
(a)3
(b)6
(c)12
(d)−12
13.Work out ((−3) + 5) × (−4) − (−6) ÷ 2
(a)−11
(b)−1
(c)−5
(d)11
14.Write down the reciprocal of 5/8
(a)−8/5
(b)8/5
(c)5/8
(d)3/8
15.Work out 100 − 4 × 5²
(a)0
(b)2400
(c)60
(d)−300

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